<template>
  <BasicModal
    v-bind="$attrs"
    @register="register"
    :title="t('component.cropper.modalTitle')"
    width="800px"
    :canFullscreen="false"
    @ok="handleOk"
    :okText="t('component.cropper.okText')"
  >
    <div :class="prefixCls">
      <div :class="`${prefixCls}-left`">
        <div :class="`${prefixCls}-cropper`">
          <CropperImage
            v-if="src"
            :src="src"
            height="300px"
            :circled="circled"
            @cropend="handleCropend"
            @ready="handleReady"
          />
        </div>

        <div :class="`${prefixCls}-toolbar`">
          <Upload :fileList="[]" accept="image/*" :beforeUpload="handleBeforeUpload">
            <Tooltip :title="t('component.cropper.selectImage')" placement="bottom">
              <a-button size="small" preIcon="ant-design:upload-outlined" type="primary" />
            </Tooltip>
          </Upload>
          <Space>
            <Tooltip :title="t('component.cropper.btn_reset')" placement="bottom">
              <a-button
                type="primary"
                preIcon="ant-design:reload-outlined"
                size="small"
                :disabled="!src"
                @click="handlerToolbar('reset')"
              />
            </Tooltip>
            <Tooltip :title="t('component.cropper.btn_rotate_left')" placement="bottom">
              <a-button
                type="primary"
                preIcon="ant-design:rotate-left-outlined"
                size="small"
                :disabled="!src"
                @click="handlerToolbar('rotate', -45)"
              />
            </Tooltip>
            <Tooltip :title="t('component.cropper.btn_rotate_right')" placement="bottom">
              <a-button
                type="primary"
                preIcon="ant-design:rotate-right-outlined"
                size="small"
                :disabled="!src"
                @click="handlerToolbar('rotate', 45)"
              />
            </Tooltip>
            <Tooltip :title="t('component.cropper.btn_scale_x')" placement="bottom">
              <a-button
                type="primary"
                preIcon="vaadin:arrows-long-h"
                size="small"
                :disabled="!src"
                @click="handlerToolbar('scaleX')"
              />
            </Tooltip>
            <Tooltip :title="t('component.cropper.btn_scale_y')" placement="bottom">
              <a-button
                type="primary"
                preIcon="vaadin:arrows-long-v"
                size="small"
                :disabled="!src"
                @click="handlerToolbar('scaleY')"
              />
            </Tooltip>
            <Tooltip :title="t('component.cropper.btn_zoom_in')" placement="bottom">
              <a-button
                type="primary"
                preIcon="ant-design:zoom-in-outlined"
                size="small"
                :disabled="!src"
                @click="handlerToolbar('zoom', 0.1)"
              />
            </Tooltip>
            <Tooltip :title="t('component.cropper.btn_zoom_out')" placement="bottom">
              <a-button
                type="primary"
                preIcon="ant-design:zoom-out-outlined"
                size="small"
                :disabled="!src"
                @click="handlerToolbar('zoom', -0.1)"
              />
            </Tooltip>
          </Space>
        </div>
      </div>
      <div :class="`${prefixCls}-right`">
        <div :class="`${prefixCls}-preview`">
          <img :src="previewSource" v-if="previewSource" :alt="t('component.cropper.preview')" />
        </div>
        <template v-if="previewSource">
          <div :class="`${prefixCls}-group`">
            <Avatar :src="previewSource" size="large" />
            <Avatar :src="previewSource" :size="48" />
            <Avatar :src="previewSource" :size="64" />
            <Avatar :src="previewSource" :size="80" />
          </div>
        </template>
      </div>
    </div>
  </BasicModal>
</template>

<script lang="ts" setup>
  import type { CropendResult, Cropper } from './typing';

  import { PropType, ref } from 'vue';
  import CropperImage from './Cropper.vue';
  import { Avatar, Space, Tooltip, Upload } from 'ant-design-vue';
  import { useDesign } from '@/hooks/web/useDesign';
  import { BasicModal, useModalInner } from '@/components/Modal';
  import { dataURLtoBlob } from '@/utils/file/base64Conver';
  import { isFunction } from '@/utils/core/ObjectUtil';
  import { useI18n } from '@/hooks/web/useI18n';

  type apiFunParams = { file: Blob; name: string; filename: string };

  defineOptions({ name: 'CropperModal' });

  const props = defineProps({
    circled: { type: Boolean, default: true },
    uploadApi: {
      type: Function as PropType<(params: apiFunParams) => Promise<any>>,
    },
    src: { type: String },
    size: { type: Number },
  });

  const emit = defineEmits(['uploadSuccess', 'uploadError', 'register']);

  let filename = '';
  const src = ref(props.src || '');
  const previewSource = ref('');
  const cropper = ref<Cropper>();
  let scaleX = 1;
  let scaleY = 1;

  const { prefixCls } = useDesign('cropper-am');
  const [register, { closeModal, setModalProps }] = useModalInner();
  const { t } = useI18n();

  // Block upload
  function handleBeforeUpload(file: File) {
    if (props.size && file.size > 1024 * 1024 * props.size) {
      emit('uploadError', { msg: t('component.cropper.imageTooBig') });
      return false;
    }
    const reader = new FileReader();
    reader.readAsDataURL(file);
    src.value = '';
    previewSource.value = '';
    reader.onload = function (e) {
      src.value = (e.target?.result as string) ?? '';
      filename = file.name;
    };
    return false;
  }

  function handleCropend({ imgBase64 }: CropendResult) {
    previewSource.value = imgBase64;
  }

  function handleReady(cropperInstance: Cropper) {
    cropper.value = cropperInstance;
  }

  function handlerToolbar(event: string, arg?: number) {
    if (event === 'scaleX') {
      scaleX = arg = scaleX === -1 ? 1 : -1;
    }
    if (event === 'scaleY') {
      scaleY = arg = scaleY === -1 ? 1 : -1;
    }
    cropper?.value?.[event]?.(arg);
  }

  async function handleOk() {
    const uploadApi = props.uploadApi;
    if (uploadApi && isFunction(uploadApi)) {
      const blob = dataURLtoBlob(previewSource.value);
      try {
        setModalProps({ confirmLoading: true });
        const result = await uploadApi({ name: 'file', file: blob, filename });
        emit('uploadSuccess', { source: previewSource.value, data: result.url });
        closeModal();
      } finally {
        setModalProps({ confirmLoading: false });
      }
    }
  }
</script>

<style lang="less">
  @prefix-cls: ~'@{namespace}-cropper-am';

  .@{prefix-cls} {
    display: flex;

    &-left,
    &-right {
      height: 340px;
    }

    &-left {
      width: 55%;
    }

    &-right {
      width: 45%;
    }

    &-cropper {
      height: 300px;
      background: #eee;
      background-image: linear-gradient(
          45deg,
          rgb(0 0 0 / 25%) 25%,
          transparent 0,
          transparent 75%,
          rgb(0 0 0 / 25%) 0
        ),
        linear-gradient(
          45deg,
          rgb(0 0 0 / 25%) 25%,
          transparent 0,
          transparent 75%,
          rgb(0 0 0 / 25%) 0
        );
      background-position:
        0 0,
        12px 12px;
      background-size: 24px 24px;
    }

    &-toolbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 10px;
    }

    &-preview {
      width: 220px;
      height: 220px;
      margin: 0 auto;
      overflow: hidden;
      border: 1px solid @border-color-base;
      border-radius: 50%;

      img {
        width: 100%;
        height: 100%;
      }
    }

    &-group {
      display: flex;
      align-items: center;
      justify-content: space-around;
      margin-top: 8px;
      padding-top: 8px;
      border-top: 1px solid @border-color-base;
    }
  }
</style>
